Transform paths from win32 seps to posix as expected by CMake

[kraenhansen]

Cmake expects paths to be using forward slashes as directory separator.

Merging this PR will:

• Transform paths from using win32 separator () to using posix seperator (/) when CMakeList.txt files are generated by gyp-to-cmake and when the weak-node-api paths are injected by cmake-rn.

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[Copilot]

Pull Request Overview

This PR introduces support for converting Win32 path separators to POSIX style in CMakeLists.txt generation for both gyp-to-cmake and weak-node-api. It adds a new transformation option in the gyp-to-cmake transformer and updates the CLI and tests accordingly.

• Added a new boolean option (transformWinPathsToPosix) to control path transformation.
• Updated the command-line interface to support disabling transformation via the "--no-path-transforms" flag.
• Implemented a new helper function in weak-node-api and added tests to verify the behavior.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
packages/gyp-to-cmake/src/transformer.ts	Added transformWinPathsToPosix option and transformPath function
packages/gyp-to-cmake/src/transformer.test.ts	Added tests validating that Win32 separators are converted to POSIX
packages/gyp-to-cmake/src/cli.ts	Updated CLI option to support disabling path transformation
packages/cmake-rn/src/weak-node-api.ts	Added toCmakePath function to convert paths (requires dependency fix)

Comments suppressed due to low confidence (1)

packages/cmake-rn/src/weak-node-api.ts:15

• The 'path' module is used here without an explicit import. Add 'import path from "node:path";' at the top of the file.

  return input.split(path.win32.sep).join(path.posix.sep);